40819442 has 8 divisors (see below), whose sum is σ = 61771356. Its totient is φ = 20228992.

The previous prime is 40819423. The next prime is 40819447. The reversal of 40819442 is 24491804.

It can be written as a sum of positive squares in 2 ways, for example, as 40819321 + 121 = 6389^2 + 11^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 40819399 and 40819408.

It is not an unprimeable number, because it can be changed into a prime (40819447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90083 + ... + 90534.

Almost surely, 2^40819442 is an apocalyptic number.

40819442 is a deficient number, since it is larger than the sum of its proper divisors (20951914).

40819442 is a wasteful number, since it uses less digits than its factorization.

40819442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180732.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 40819442 is about 6389.0094693935. The cubic root of 40819442 is about 344.3147976950.

The spelling of 40819442 in words is "forty million, eight hundred nineteen thousand, four hundred forty-two".